I have a roll x on my truck a 2014 Ram CC and I had it on my 2012 Ram CC. I have a B & W hitch and an 60 gal aux fuel tank. The top fits nicely over both and no issues with hitting the rails if I have to back up tight. The bad news is you cannot see the hitch or pin. If you have a camera mounted on the top of your cab it will not be a problem. As a full timer I don't hitch up very often. I have my wife watch me back up and guides me on. (she does not stand between the truck and fiver) I am going to purchase those magnetic sticks with the balls on top that bumper pull people use. It should work on my set up. The top works ok it does leak some in heavy rains like the kind we get in SW Fla. almost everyday in the summer. The amount of water is minor and runs between the valleys in the bed floor. I like it because I can fit my tank and hitch under it. It has aluminum under the skin making it more difficult to get into and it is locked when the tail gate is closed. My tail gate locks and unlocks with the electric locks so it is like a big trunk. Easy to install.